byte Array To Hex String : Byte « Data Type « Java Tutorial

1. Java Tutorial
2. Data Type
3. Byte

public class Main {

  public static void main(String arg[]) {
    byteArrayToHexString(("abc").getBytes());
  }

  public static String byteArrayToHexString(byte[] b) {
    StringBuffer sb = new StringBuffer(b.length * 2);
    for (int i = 0; i < b.length; i++) {
      int v = b[i] & 0xff;
      if (v < 16) {
        sb.append('0');
      }
      sb.append(Integer.toHexString(v));
    }
    return sb.toString().toUpperCase();
  }

}